A car travels 2.5 hours in a northernly direction for 300 km. determine the cars speed and velocity.
time=
distance=
direction=

Speed= 120 km/h

Velocity= 120 Km/h North

Explanation:

Time= 2.5 hours

Distance= 300 Km

Direction= North

Speed= distance/speed

Velocity= speed and direction

Substituting 300 km for speed and 2.5 hours for time then speed= 300/2.5= 120 km/h

The velocity= 120 km/h North

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia